Centralize error reporting of improper uses of incomplete types in the
new DiagnoseIncompleteType. It provides additional information about
struct/class/union/enum types when possible, either by pointing to the
forward declaration of that type or by pointing to the definition (if
we're in the process of defining that type). 
Fixes <rdar://problem/6500531>.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62521 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/SemaCXX/new-delete.cpp b/test/SemaCXX/new-delete.cpp
index fa19c6a..ce96897 100644
--- a/test/SemaCXX/new-delete.cpp
+++ b/test/SemaCXX/new-delete.cpp
@@ -8,7 +8,7 @@
   S(double, int); // expected-note {{candidate}} expected-note {{candidate}}
   S(float, int); // expected-note {{candidate}} expected-note {{candidate}}
 };
-struct T;
+struct T; // expected-note{{forward declaration of 'struct T'}}
 struct U
 {
   // A special new, to verify that the global version isn't used.